Home / 678,793.58-1,018,411.55-323,761.40

Finding the Fourth Proportional to 678,793.58, 1,018,411.55 and 323,761.40

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Solution

The fourth proportional to 678,793.58, 1,018,411.55 and 323,761.40 is: 485,747.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,793.58 : 1,018,411.55 = 323,761.40 : x
  2. Step 2: Convert to fraction form
    678,793.58/1,018,411.55 = 323,761.40/x
  3. Step 3: Cross multiply
    678,793.58x = 1,018,411.55 × 323,761.40
  4. Step 4: Simplify right side
    678,793.58x = 329,722,347,585.36
  5. Step 5: Solve for x
    x = 329,722,347,585.36/678,793.58
  6. Step 6: Final answer
    x = 485,747.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.